Struct fidl_fuchsia_sysmem::BufferCollectionInfo2

pub struct BufferCollectionInfo2 {
    pub buffer_count: u32,
    pub settings: SingleBufferSettings,
    pub buffers: [VmoBuffer; 64],
}

Information about a buffer collection and its buffers.

Fields

buffer_count: u32

The total number of buffers.

settings: SingleBufferSettings

These settings apply to all the buffers in the initial buffer allocation.

buffers: [VmoBuffer; 64]

VMO handles (and vmo_usable_start offset) for each buffer in the collection.

If present, all the VMOs at or after index buffer_count are invalid (0) handles.

All buffer VMO handles have identical size and access rights. The size is in settings.buffer_settings.size_bytes.

The VMO access rights are determined based on the usages which the client specified when allocating the buffer collection. For example, a client which expressed a read-only usage will receive VMOs without write rights. In addition, the rights can be attenuated by the parameter to BufferCollectionToken.Duplicate() calls.

Trait Implementations

impl Debug for BufferCollectionInfo2

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Decode<BufferCollectionInfo2> for BufferCollectionInfo2

fn new_empty() -> Self

Creates a valid instance of Self. The specific value does not matter, since it will be overwritten by decode.

unsafe fn decode( &mut self, decoder: &mut Decoder<'_>, offset: usize, _depth: Depth ) -> Result<()>

Decodes an object of type T from the decoder’s buffers into self.

impl Encode<BufferCollectionInfo2> for &mut BufferCollectionInfo2

unsafe fn encode( self, encoder: &mut Encoder<'_>, offset: usize, _depth: Depth ) -> Result<()>

Encodes the object into the encoder’s buffers. Any handles stored in the object are swapped for Handle::INVALID.

impl<T0: Encode<u32>, T1: Encode<SingleBufferSettings>, T2: Encode<Array<VmoBuffer, 64>>> Encode<BufferCollectionInfo2> for (T0, T1, T2)

unsafe fn encode( self, encoder: &mut Encoder<'_>, offset: usize, depth: Depth ) -> Result<()>

Encodes the object into the encoder’s buffers. Any handles stored in the object are swapped for Handle::INVALID.

impl Hash for BufferCollectionInfo2

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl Ord for BufferCollectionInfo2

fn cmp(&self, other: &BufferCollectionInfo2) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized + PartialOrd,

Restrict a value to a certain interval.

impl PartialEq for BufferCollectionInfo2

fn eq(&self, other: &BufferCollectionInfo2) -> bool

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl PartialOrd for BufferCollectionInfo2

fn partial_cmp(&self, other: &BufferCollectionInfo2) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

fn lt(&self, other: &Rhs) -> bool

This method tests less than (for self and other) and is used by the < operator.

fn le(&self, other: &Rhs) -> bool

This method tests less than or equal to (for self and other) and is used by the <= operator.

fn gt(&self, other: &Rhs) -> bool

This method tests greater than (for self and other) and is used by the > operator.

fn ge(&self, other: &Rhs) -> bool

This method tests greater than or equal to (for self and other) and is used by the >= operator.

impl ResourceTypeMarker for BufferCollectionInfo2

type Borrowed<'a> = &'a mut BufferCollectionInfo2

The Rust type to use for encoding. This is a particular Encode<Self> type cheaply obtainable from &mut Self::Owned. There are three cases:

fn take_or_borrow<'a>( value: &'a mut <Self as TypeMarker>::Owned ) -> Self::Borrowed<'a>

Cheaply converts from &mut Self::Owned to Self::Borrowed. For HandleBased types this is “take” (it returns an owned handle and replaces value with Handle::invalid), and for all other types it is “borrow” (just converts from one reference to another).

impl TypeMarker for BufferCollectionInfo2

type Owned = BufferCollectionInfo2

The owned Rust type which this FIDL type decodes into.

fn inline_align(_context: Context) -> usize

Returns the minimum required alignment of the inline portion of the encoded object. It must be a (nonzero) power of two.

fn inline_size(_context: Context) -> usize

Returns the size of the inline portion of the encoded object, including padding for alignment. Must be a multiple of inline_align.

fn encode_is_copy() -> bool

Returns true if the memory layout of Self::Owned matches the FIDL wire format and encoding requires no validation. When true, we can optimize encoding arrays and vectors of Self::Owned to a single memcpy.

fn decode_is_copy() -> bool

Returns true if the memory layout of Self::Owned matches the FIDL wire format and decoding requires no validation. When true, we can optimize decoding arrays and vectors of Self::Owned to a single memcpy.

impl Eq for BufferCollectionInfo2

impl Standalone for BufferCollectionInfo2

impl StructuralPartialEq for BufferCollectionInfo2